Combined door check and hinge.



N0- 829,601. PATENTED AUG. 28, 1906;

' N. PETERSEN.

COMBINED DOOR CHECK AND HINGE.

I APPLICATION FILED men. 1905.

II TNESSES Door Check and I inge, of which-the follow- I sists in the details of'construction and combistand how to make an in whic r A of the hinge and having a piston D fittedto ,independent of the hinge, if desired. Of

UNITED STATES PATENT orrion.

NlELSPElERsEN, or PHILADELPHIA, PENNSYLVANIA.

" COMBINEDDOOR CHECK AND HINGE.

Specification of Letters Patent. Application and August ,17. 1905. Serial o. 274.547.

To all whom it may concern:

Be it known that I, NIELS PETERSEN, a

citizen of the United States, residing at Phil-' adelphia, county of Philadelphia, and State of Pennsylvania, have invented a certain new and useful Im rovement in a Combined inglis a specification. y invention relates to a new and useful improvement in a combined door check and hinge, and is intended as an improvement upon an application for patent on a door check and hinge filed by me July 28, 1904, Serial No. 218,520. r

The object of this invention is to rovide a hin e so constructed thatwhen the l daves are fol ed togetherthe door will be checked and allowed to close slowly, all the ap aratus, for checking the door being out of siglil; when the door is closed.

With these ends in view this invention connation of elements hereinafter set forth and then specificallydesignated b the claim.

' In order that those skille in the art to which this invention a ertains ma underd dbe the same j the construction and operation will now be described in detail, referring to the accompanying drawings, forming a part of'this specification, improved s p n;

Figure 1 is an'ele'vation of m door check and hinge with. the Fig. 2, a crosssection of the hinge, taken on the line 2 2 of Fig. 1", showing the hinge partially closed; Fi 3, a section through the two leaves of the inge. a

in the drawing's,IA and B represent the two leaves; of the hinge, said leaves being ivote'd together and having a coiled spring; around the pivot, which spring tends to always force said leaves together to .close thedoor. Anyfdrm o'f sprin arrangementcould be used, and I make no 0 aim upon this or tion of the hinge. 'In'fact, the leaves 0 the hinge can be pivoted together without the spring and have a spring to act upon the door course it is more practica to have the included in the hinge, asshown.

C indicates a cylinder-formed with the leaf spring slide therei p E is a tubular piston-rod extending up-' upper endv of the ward through the upper endof. thecylinder, and the bore of the pi'stongrod extends en- .tirely through the piston.

F indicates a valve fitting against the unr Patented. Aug. 28, 1906.

der side of the opening through the piston, l

and G is a sprin tending to force .the valve upward toward t e piston to close the openin formed through thesame.

indicates openings formed through the walls of the the piston. Thus if the piston. is forced downward against air or liquid pressure the valve F will close the opening through the piston automatically; but if the piston is raised against air or liquid pressure the liquidv or air willflow through the openings H. The valve will be removed from its seat automatically to allow the air. or liquid to escape to that portion of the chamber underneath the piston. Thus the valve F forms .an 'ordi nary checkvalve. The upper ortion of. the tubular iston-rod E is close by a screwthreaded rod I, which is threaded from the iston-rod downward through the same, an the lower end of. the rod I maybe brought incontact with theupper end ofthe valve-stem of the valve F, so that, if desired, the valve F can be kept from entirely closing against its seat.

, J indicates a vertical slot formed the leaf A of the hinge above the cylinder C, and this slot forms aguidewa for the sliding block K. This sliding block its center from its upper side downward, so as to form a recess, and in'thisrecess is journaled an antifriction-roller L. The ends. of

the sliding block K are grooved, so as to fit and slide upon the leaf of the hinge within the'slot'J; but the fiange'upon one side of the .groove is longer than the flange u on the other side of the groove, and the s ot J is widened slightl at .itsuper end, as indicated' at J, an is of sucli a'width thatthe side of'the block K having the shorter flanges may. pass 'therethrough until the grooves in the ends of the block are in alinement with through is'cut away in tubular piston-rod a little above the Walls of the slot J, and then the block will fall downward by gravity-and rest-upon the top of the pistonrod E.

Upon the opposite leaf B of the hinge is formed a projecting lug M, beveled from its outer end downward and inward toward the leaf. This lug M is formed concentric with the pivotal axis of the hinge and is in such 8.

is i .1 L tomofithegc, linder is a -tap'eringpmO, the s baseof Whie is practically'thesame size as ward'the liquid or airtcan' only escape to'the d pe "Therefore it can be seen that the che'cking'of the! door can be adjusted toa nicety.

I In'tln's instance it be seen that whenthe 3 ID" be open .to practically its fiullest .ex-

- tentg bfuztas the piston travels downward the l and'valve could ,be used in conjunction with (raised to its highest position-b means of a -sEri g-N, interposed between t e'bottom of ccylinder and the piston, which will force really no resistance offered; ainst t e-up-- ward movement of-the piston, forlt'he Valve Fkwilllbe free .toopen to its greatest extent to I iall'ow thefiow of liquid to the other side-of he'pistom ance 1andigrgduaglly close=sl0wl toward the "end- "In-order ,to accomplisht II "45 further the door is closed. Of course this xpin osition that when the leaves-o f the'hingezare 1 orced together the inclinedsdriaceof the lug M will strike the roller L and force the sliding block K downward, andconsequently-ipress the iston D downward.

T e cylinder C is designed to be used-with I either air or ii uid as a resisting agent; "but this tor-m is me e, referably, for li uid; such as glycerin, oil, or t e like, and byt e .proper adjustment of the screw I the valve F will always be held acertain distance off-its seat, so th'atwhen the piston D is forced downupper' chamber around the valve, ;and the I rapidityxwith whichthe' door will'close will 11 qupon -how far the valve is held open.

- When the door is openedand'thegleaires of. the hinges'pread, thepiston will bequickly the piston upward, 'andithere be ractiyn 'isfoften found desirable to have the door close quicklywhen it first meets the resist- I "s, I provide e 1-,ig l openinIg D; formed -through the piston',and exten' ng upward from the bot- .theo eningfl), but ta ers upward to a-point.

"piston-is first-forced :downwardthe ;opening beiclos'ed more and more byTthe r pin Q'so thatthe res stance 1s. increased the i need not be used unless desired,'.or.the pin oneflanother. (Of course, desired, two cylinders could beused'the same as in my former patent;

theihingei'and tle thereof, a

' downward-through the piston o enin s formedthro h the same im'me P i 8 v ded the roller in'the'slidingtogether, and a sp htlti,

indoi' is suificient.

have iound by experience that one oyl- 1 Harving thusfullyldescribedlmy invention, whatd'claim as new'and useful"is- In a combined hinge and door-check, a hinge consisting- 0f twoleaves-pivoted together, a spring adapted to automatically olose 'the'door, acylinder adapted to contain either air or liquid formed with one'leatof extending parallel with the piniston fitted to slide within the cylinder, a tubularpiston-rod extendlngupward through .the n per end of theecyhnd er, the vbore through the piston-rod extendlng aIoheck-Valve tending to close upward against the under side of the piston en controlling this openabove' downward throngh the piston rodand ada ted to bear againstitheioheck-valve to whol the 'same more .or less from ofiiits seat '-'when the 'piston is pressedldownward, the

walls .of the tubular'piston-rod .proviid'ed the piston provi ately a vethe lpiston, I

formed through the with a vertical opening same to one side-(lithe piston-rod; a'tapering pin Securedin the lower end of the cy inder adapted to pass-through said opening when the iston i's .iorced downward, saidpin tapering. 'om .aipoint at its ter practically I lower .end, a :sliding block restingj upon the naked in said sliding? block, the leaf -o I the hingeiabovelthe cylinder provided with a slot in whichsaidsl-i'ding iblock-is g uided, a lug formedwith the: opposite leaf of the-hinge and .extendin outwardtherefnom; -.said- In being tapers from its up er and outer en downward toward the 1s :of the hinge; said hiolined'sufiace ref-the higladapted vto strike b ock and press 'the piston-downward when the leaves are brought gator the piston to its normal position, .a'aspec' ed g in (testimony vigvhere'of I have hereunto affixed my signature in the presence: .of two subscribing witnesses I I NIEW PETERSEN.

'Witne'sses:

'Jonn' Ewmes, ANNA Mar Sonwnnn.

upper end of thenpiston-rodya; roller iour- 111g,- a screw threaded. Lrod threaded from upper end to a diainethe same as'the .openingaat its 

